Ruby设计模式:如何创建可扩展的工厂类？

class Product
  def initialize(name)
    @name = name
  end

  def name
    @name
  end
end

class Factory
  def initialize(product_name)
    @product_name = product_name
  end

  def create_product
    Product.new(@product_name)
  end
end

class ConcreteProduct1 < Product
  def initialize(name)
    super(name)
  end
end

class ConcreteProduct2 < Product
  def initialize(name)
    super(name)
  end
end

factory = Factory.new("ProductA")
product = factory.create_product
puts product.name # 输出 "ProductA"

class ConcreteProduct3 < Product
  def initialize(name)
    super(name)
  end
end

factory = Factory.new("ProductA")
product = factory.create_product
puts product.name # 输出 "ProductA"